By CASEY MCNERTHNEY, SEATTLEPI.COM STAFF

Updated 10:00 pm, Tuesday, November 3, 2009

Investigators are reviewing several hours of in-car video, trying to find a suspect in the fatal Halloween shooting of Seattle Police Officer Timothy Brenton and wounding of of his partner.

Police were looking for vehicles similar to the vague description of the car used in the Saturday night shooting -- a beige, white or possibly silver two-door car that fled on 29th Avenue.

But Sgt. Sean Whitcomb said late Monday night police had not identified a suspect or a specific vehicle.

"Right now, we're tracking down a number of leads," he said.

Police said they haven't determined how many people were in the suspect car. They also did not disclose information about the weapon used or rounds fired.

Whitcomb also asked the public to continue providing tips. The reward for information leading to the arrest and conviction of the shooter was increased to $85,000 Tuesday.

Police believe the suspect car initially fled in reverse, possibly because the suspect may have known patrol cars have front-end cameras. Officers have said the assassination was a deliberate attack that appeared to target Brenton and his partner, Officer Britt Sweeney, at random.

Sweeney returned fire, but investigators are unclear if the suspect or suspect vehicle was struck.

But that information is general in nature, Assistant Chief Jim Pugel said.

"There's absolutely no connection [to the Seattle shooting] that we can tell with any other police department, but we do benefit greatly and allow the investigation to mature by getting all this information," Assistant Chief Jim Pugel said Tuesday afternoon.

"And most likely it also allows us to exclude that information."

Pugel, who responded to the Saturday shooting scene near East Yesler Way and 29th Avenue, read reporters a handwritten letter from one of Brenton's family members.

"Even with the tragic loss, Tim's wife and children are finding solace in the support from the police community, their friends and family and the community as a whole," the letter said. "We know that Tim would be honored and humbled by the limitless support that has been provided at the difficult time."

Clear Channel donated digital billboard space in Kent, providing tip lines and a bold message to help solve Brenton's murder. Pugel said the company had space available there, but specified officers are not targeting leads in Kent.

Pugel said Tuesday officers were still investigating the Oct. 22 arson of four police vehicles at a city lot, but had not linked that unsolved incident to the officer shootings.

"It would be reckless for us not to look at what happened on Oct. 22, but at the same time we don't know if it is connected," he said. "So that's why were considering that as well as many others."

Specific threats for future attacks on officers were not left at the fire scene, police said.

Rounds fired from Sweeney's service weapon have been recovered, and she is working with investigators.

"I believe strongly we're going to get them," he said of a shooting suspect or suspects.

Anonymous tipsters may be left for CrimeStoppers of Puget Sound at 1-800-222-TIPS.